【Package Content】You will receive 1 piece 30cm (12 inch) steel ruler, 1 piece 20cm (8 inch) steel ruler, 1 piece 15cm (6 inch) steel ruler. 【Double Scale】Metric and imperial scale, each side is precision. On end of the rule there is a hole easy to hook. 【Durable Ruler】The rulers are made of high-quality stainless steel, which has good oxidation resistance and corrosion resistance. The steel ruler construction is durable and helps prevents unnecessary nicks and bends. 【Laser Etched】The metal ruler are laser etched for accuracy. These markings will never fade or scratch off. 【Ideal Measurement Tool】The stainless steel ruler has a wide range of applications to meet various needs. Especially suitable for students, engineers, architects, teachers and other professionals to use.